Where: Alaska (57.0° N, 133.0° W: paleocoordinates 1.8° N, 71.5° W)

• coordinate based on nearby landmark

When: Lacian (221.5 - 215.6 Ma)

• Lower Norian reef zone

Environment/lithology: marine

Primary reference: J. P. Smith. 1927. Upper Triassic marine invertebrate faunas of North America. United States Geological Survey Professional Paper 141:1-262 [D. Bottjer/C. Powers/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 33411: authorized by David Bottjer, entered by Catherine Powers on 29.07.2003

Creative Commons license: CC BY (attribution)